Page Six hears that a serial pooper has been stalking the halls of the legendary Shubert Theater — and the last time they struck, a turd appeared in the aisle near Hillary and Chelsea Clinton at "Some Like It Hot."

A source close to the show insists that it was a regrettable one-off incident.

But another source tells us that the theater’s staff said that the s—t’s (almost) hit the fans at other performances as well.

"Last week when Hillary and Chelsea Clinton were in the audience," said a source, "the lights came up for intermission and there were two human turds in the aisle just near the famous political duo."

The insider added, "The house crew dealt with it very appropriately and quickly, and Hillary and Chelsea remained in the theater for the second act."